ACLU – “For better or worse, the way Congressional districts are drawn can determine who wins elections, which communities are represented, and what laws are passed. Explore how your own district has changed (sometimes dramatically) over time.”
Most state legislatures have the power to draw new congressional district boundaries. Enter your zip code and you will be provided with the history of the boundaries in your respective district from 1953 to the present. This resource clearly identifies the history of gerrymandering in districts around the country.